1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
polet [3.4K]
3 years ago
15

Solve the following system:

Mathematics
1 answer:
prisoha [69]3 years ago
3 0

Answer:

Read explanation

Step-by-step explanation:

Use elimination

Add them all up

y = 1 ( everything else cancels )

-2x + 2(1) + z = 14

3x - 2(1) + z = -5

-x +(1) - 2z = -8

simplify

-2x + z = 12

3x + z = -3

-x -2z = -9

U can't use elimation because it would turn into 0 = 0

change last equation

x + 2z = 9

x = -2z + 9

plug that in

-2(-2z+9) + z = 12

3(-2z+9) + z = -3

-(-2z+9) - 2z = -9

4z - 18 = 12

-6z + 27 + z =-3

2z - 9 - 2z = -9

simplify

4z = 30

-5z = -30

0 = 0

z = 6

y = 1

x = -3

You might be interested in
Simplify completely quantity 12 x plus 36 over quantity x squared minus 4 x minus 21 and find the restrictions on the variable..
Softa [21]
To simplify the expression stated, it is better to write it in the numerical form. The statement is:

<span>quantity 12 x plus 36 over quantity x squared minus 4 x minus 21

The numerical form is:

12x+36 / (x</span>²-4x-21)

Simplifying,
12x+36 / (x<span>²-4x-21)
</span>12 (x+3) / (x+3)(x-7)

We can cancel the x+3 term, leaving only:
12/(x-<span>7)</span>
3 0
3 years ago
Read 2 more answers
Solve for B in the picture below
Oxana [17]

Answer:

b= -48

Step-by-step explanation:

by transposing,

43=59+b/3

b/3+59=43

b/3=43-59

b/3= -16

b= -16×3

b= -48

therefore the answer is b= -48

hope it helps!!!

PLEASE MARK BRAINLIEST..

5 0
2 years ago
Read 2 more answers
Layton conducts an experiment throughout the school year to determine the most common answer
sergij07 [2.7K]

Answer:

pick a because the data is better for that chart

4 0
3 years ago
How do you solve y - 2 = 5 (x - 1) using slope - formula. I WILL GIVE YOU A BRAINLIEST IF YOU GIVE THE RIGHT ANSWER.
ladessa [460]

Answer:y=5x−3

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the least number which when divisible by 20, 24, 32 and 38 leaves a remainder 5 in cach case
Olegator [25]

Answer:

18245

Step-by-step explanation:

We have to use L.C.M,

L.C.M(20,24,32,38)

2|20,24,32,38

2| 10 ,12 ,16 ,19

2| 5 , 6 , 8 , 19

2| 5 , 3 , 4 , 19

2| 5 , 3 , 2 , 19

L.C.M = 2 x 2 x 2 x 2 x 2 x 2 x 5 x 3 x 19

          = 18240

Now for each case remainder is 5,

So the number is 18240+5

=> 18245

7 0
3 years ago
Other questions:
  • Joel is mailing a large envelope to his cousin. The envelope has pictures inside, so he doesn't want to bend it.
    15·1 answer
  • What is -3 -4(2x -3)?
    11·1 answer
  • What is 0.5935 rounded to the nearest tenth
    13·2 answers
  • a population of bacteria grows at a rate of 45% the initial population contains an initial population of 350 what will populatio
    5·1 answer
  • Find the area of the figure below formed from a triangle and from a rectangle in square millimeters
    9·2 answers
  • Please help me this is URGENT Due in TWO MINUTES I will mark brainliest please hurry!
    13·2 answers
  • The equation of the line that passes through the points (-2,0) and (0,2) can be expressed in the form y=mx+b. What is the value
    5·1 answer
  • Two-thirds of a number is equal to negative one-fifth. what is the number?​
    5·2 answers
  • Need help ASAP! Directions in picture ;)
    15·1 answer
  • Regularity of 4, 6, 10, 18, 34, 66<br> Three Next numbers
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!